Chapter 8: Digestive System Flashcards
the digestive system ____________ and ___________ breaks down food and absorbs nutrients in the body
mechanically and chemically
organs and accessory structures of the digestive system include:
- anus
- esophagus
- gallbladder
- large intestine
- liver
- mouth
- oral cavity
- pancreas
- pharynx
- salivary glands
- small intestine
- stomach
an/o
anus
append/o
appendix
appendic/o
appendix
bar/o
weight
bucc/o
cheek
cec/o
cecum
cholangi/o
bile duct
chol/e
bile, gall
cholecyst/o
gallbladder
choledoch/o
common bile duct
cirrh/o
yellow
col/o
colon
colon/o
colon
dent/o
tooth
diverticul/o
pouch
duoden/o
duodenum
enter/o
small intestine
esophag/o
esophagus
gastr/o
stomach
gingiv/o
gums
gloss/o
tongue
hepat/o
liver
ile/o
ileum
jejun/o
jejunum
labi/o
lip
lapar/o
abdomen
lingu/o
tongue
lith/o
stone
odont/o
tooth
or/o
mouth
palat/o
palate
pancreat/o
pancreas
pharyng/o
pharynx
polyp/o
polyp
proct/o
anus and rectum
pylor/o
pylorus
pyr/o
fire
rect/o
rectum
sialaden/o
salivary gland
sigmoid/o
sigmoid colon
-emesis
vomit
-emetic
pertaining to vomiting
-iatric
pertaining to medical treatment
-istry
speciality of
-lithiasis
condition of stones
-orexia
appetite
-pepsia
digestion
-phagia
eat, swallow
-prandial
pertaining to a meal
-tripsy
surgical crushing
most digestive organs are actually distinct section of the gut tube and those are:
- oral cavity
- pharynx
- esophagus
- stomach
- small intestine
- large intestine
accessory organs involved in the digestive process but not part of the continuous gut tube
- salivary glands
- pancreas
- liver
- gallbladder
accessory organs are connected to the gut by
ducts
the digestive system has three main functions
1- physical and chemical breakdown of food into smaller nutrient molecules
2- absorption of nutrients into the bloodstream
3- elimination of any food that is not digested or absorbed
the ______________ is the first portion of the continuous gut tube
oral cavity
the ________ mechanically break down food
teeth
the ________ moves food and mixes it with saliva
tongue
saliva contains _________________ and __________ food
digestive enzymes and lubricates
_______________ detect the five main flavors
taste buds
the __________ is the roof of the oral cavity
palate
the bony anterior portion is the
hard palate
the flexible posterior portion is the
soft palate
the _______ hangs from the soft palate, where it is involved in speech production and the gag reflex
uvula
the ________ are the lateral walls of the oral cavity
cheeks
the ______ are the anterior opening of the oral cavity
lips
the entire oral cavity is lined with
mucous membrane
a portion of the mucous membrane forms _________ or _________
gums or gingiva
the teeth in the front of the mouth ______, ________, and ______ food
bite, tear, and cut
the teeth toward the back of the mouth _______ and ______ food into finer pieces
grind and crush
teeth in front:
- incisors
- cuspids (canines)
teeth in back:
- bicuspids (premolars)
- molars
all teeth consist of 2 main parts
- crown
- root
the crown lies ________ the gum line
above
the root lies _________ the gum line
below
the root is anchored in the jaw by ____________ and ____________ ligaments
cementum and periodontal
the crown is covered by
hard enamel
the bulk of the tooth is made of
dentin
the hollow interior is the _______ __________ in the crown and root canal in the root
pulp cavity
cavities contain soft tissue made up of ___________, _________, and ___________
blood vessels, nerves, lymph vessels
humans have __ sets of teeth
2
the _______________ teeth erupt between the ages of 6 and 28 months
20 deciduous (baby)
around age 6, the deciduous teeth begin to be replaced by the ____________________
32 permanent teeth
eruption of the permanent teeth continues until around ages
18-20
after the oral cavity, the next portion of the digestive tract is the
pharynx
food first passes through the _____________, then progresses through the ______________
oropharynx/laryngopharynx
the ___________ is a flap that prevents swallowed food from entering the respiratory tract
epiglottis
the _____________ is a muscular tube that is about 10 inches long in most adults
esophagus
the esophagus carries food through the ______________ cavity and into the _______________ cavity, where it enters the ___________
thoracic cavity/ abdominal cavity/ stomach
food is propelled through the esophagus by wavelike contractions called
peristalsis
the stomach churns food with ________________ and other gastric juices to form _________
hydrochloric acids/ chyme
the stomach consists of 3 parts
1- fundus (upper portion)
2- body (main portion)
3- antrum (lower portion)